Mark the letter A, B C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
While the teacher was explaining the some on the blackboard, the children threw paper aeroplanes around the classroom.

A. around

B. threw 

C. on the 

D. was explaining

Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Hardly he had graduated from Vietnam Naval Academy when he joined Vietnam Coast Guard.

A. he had    

B. graduated from  

C. when       

D. joined

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Both Mr. and Mrs. Smith are explaining children the rules of the game

A. Both

B. Mr. and Mrs. Smith

C. are

D. children the rules of the game

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

The teacher was (A) considering (B) postponing the exam until (C) the following week (D) because the student’s confusion.

A. considering 

B. postponing 

C. the following week

D. because

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

The teacher was (A) considering (B) postponing the exam until (C) the following week (D) because the student’s confusion.

A. considering

B. postponing the exam until 

C. the following week 

D. because 

Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Both Mr. and Mrs. Smith are explaining the children the rules of the game.

A. both Mr. and Mrs. Smith

B. are

C. explaining

D. the children the rules of the game

Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Both Mr. and Mrs. Smith are explaining the children the rules of the game.

A. both Mr. and Mrs. Smith    

B. are

C. explaining    

D. the children the rules of the game

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

His teacher encouraged (A) him taking (B) part in the international (C) piano competition (D).

A. encouraged

B. taking

C. the international 

D. competition